Administrator’s Guide for SIP-T58V/T58A/T56A/CP960 IP Phones
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Note: It works only if “voice.tone.country” is set to Custom. If you want to disable this warning tone, set it
to 0.
Permitted
Values
String
Default Blank
Web UI Settings->Tones->Stutter
Parameter voice.tone.autoanswer <y0000000000xx>.cfg
Description
It customizes the warning tone for the auto answer.
The value format is Freq/Duration. For more information on the value format, refer to the parameter
“voice.tone.dial”.
Note: It works only if “voice.tone.country” is set to Custom. If you want to disable this warning tone, set it
to 0.
Permitted
Values
String
Default Blank
Web UI Settings->Tones->Auto Answer
Audio Codecs
CODEC is an abbreviation of COmpress-DECompress, capable of coding or decoding a digital data stream or signal by
implementing an algorithm. The object of the algorithm is to represent the high-fidelity audio signal with a minimum
number of bits while retaining the quality. This can effectively reduce the frame size and the bandwidth required for
audio transmission.
The audio codec that the phone uses to establish a call should be supported by the SIP server. When placing a call, the
phone will offer the enabled audio codec list to the server and then use the audio codec negotiated with the called
party according to the priority.
Topics
Supported Audio Codecs
Audio Codecs Configuration
Supported Audio Codecs
The following table summarizes the supported audio codecs on the phones:
Codec Algorithm Reference Bit Rate Sample Rate Packetization Time
G.722.1c
G.722.1c
RFC 5577 48 Kbps 32 Ksps 20ms
G.722.1c RFC 5577 32 Kbps 32 Ksps 20ms
G.722.1c RFC 5577 24 Kbps 32 Ksps 20ms
G.722.1 G.722.1 RFC 5577 24 Kbps 16 Ksps 20ms
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